Recorded radar data indicated that, after takeoff, the airplane climbed to an altitude of 7,500 feet. As the flight neared the destination airport – and while still over mountainous terrain – the pilot initiated a descent. The wreckage was found the next day in mountainous terrain at an elevation of 4,100 feet MSL. Based on the wreckage, investigators determined that the Mooney hit the ground in a wings level attitude.

Investigators found no evidence of pre-impact mechanical malfunctions.

Probable cause: The pilot’s failure to maintain terrain clearance during a cruise descent. The darkness and mountainous terrain were factors.